Benjamin j



B. J. LEVIN.

CONNECTED BLOW-OUT PATCH.

APPLICATION FILED JULY 31,1919.

1,357,784. Patented Nov. 2, 1920.

WITNESSES INVENTOR ,Be'amza /I Lez/z'a BY @fM, W

' A TTORNEYS UNITED STATES BENJAMIN J. LEVIN, OF NEW YORK, N. Y.

CONNECTED BLOlV-O'U'l PATCH.

Application filed July 31,

To all m from it may concern:

Be it known that I, BENJAMIN J. LnvIN, a citizen of the United States, and a resident of the city of New York Winfielchborough of Queens, in the county of Queens and State oi. New York, have invented new and useful Connected Blow-Out Patches, of which the following is a full, clear, and exact description.

This invention relates to a repair or blow out patch for automobile or other tires,- and has for an object to provide an improved construction, wherein a strong and accurately fitting patch is provided regardless oi the size or shape of the opening to be repaired.

Another object of the invention is to provide a blow out patch member with a number of connected individual patches adapted to be severed for separate use.

A further object of the invention is to provide a blow out patch construction formed from the carcass of tires and con structed to produce patches either of the same or diflerent lengths.

In the accompanying drawing:

Figure 1 is a side view of a carcass of an automobile tire or shoe.

Fig. 2- is a section through Fig. 1 on line 2--2.

Fig. 3 is a side view of the continuous patch embodying the invention, the same having been contracted from the carcass shown in Fig. 1.

Fig. at is a view of one of the patches removed :From the continuou patch structure shown in Fig. 3.

Fig. [i is a section through Fig. 3 on line 55. p

Referring to the accompanying drawing by numerals 1 indicates a carcass of an ordinary automobile tire. It will be observed that this carcass is provided with an inner layer 2 of canvas which extends entirely around the interior of the carcass and also in cross section forms almost a circle. Outside of this inner layer there is mounted a plurality of. layers in step formation, as shown in Fig. 2, said step layers being annular similar to layer 2. This is the ordinary construction of carcass as now in use. In the present invention it is aimed to construct both large andsmallpatches from a carcass taken from an old tire. After the rubber coatinghas been removed from the Specification of Letters Patent.

Patented Nov. 2, 1920.

1919. Serial No. 314,499.

carcass it appears as shown in Fig. 1, the various layers are cut away as shown in Fig. 3 for producing patches 3, 4, 5 6, 7, 8 and 9, said patches being progressive in size so that when a patch is desired the inner layer of canvas 2 is cut at Ya central point 10 between the respective patches and thereby produces the disconnected patch required shown in Fig. 4. After the continuous patch structure is produced as shown in Fig. 3, it is coated exteriorly with rubber cement and allowed to dry. The characteristic of rubber cement is such that though it is dry, as ordinarily understood in the trade, it has a sticky consistency, and when the patch is placed in position the cement willact as retaining means, for preventing accidental dislocation of the atch.

The various patche are iormed with a step construction 12 beforethe layer 11 of cement is applied, said step construction permitting the use or" the desired number of thicknesses of canvas over the blow out or opening, while at the same time producing a tapering edge, which really by reason of the thinness oi the layer 2 presents a feather edge to the inner tube. If an abrupt edge of considerable size was presented the inner tube would naturally conform to the shape of said abrupt edge when inflated, but would in a short time wear or break at this point. To obviate this the step construction is made exteriorly of the patch, and a smooth feather edge is produced on the side facing the inner tube. whereby a substantially thin continuou bed is presented to the inner tube while at the same time the opening or hole in the tire is properly covered.

It will be noted from Fig. 3 that the patches are of different sizes so as to accommodate dilierent size blow outs, but if desired a continuous patch construction could be formed with all the patches the same size.

What I claim is: p

1. The method of producing patches comprising the removal of the rubber from an old pneumatic tire so ,as to leave the carcass bare, forming a plurality of independent super-imposed patch sections on the inner layer of said carcass by cutting away parts of the outer layers of said carcass whereby each patch structure will have a plurality of super-imposed layers successively smaller from the inner to the outer layer, and the provision of a coating 0]": rubber cement over said patch structures exteriorly.

2. An article of manufacture comprising an inner annular strip arc-shaped in cross section, a plurality of series of super-imposed strips arranged on the annular strip, the layers of each series of super-imposed strips being succesively shorter circumferentially from the inner to the outer layer, and a coating of rubber cement extending over all of said super-imposed layers and that part of the annular layer connecting said series.

3. An article of manufacture comprising an inner annular strip arcshaped in cross section, and a plurality of series of superimposed strips arranged on the annular strip, the layers of each series of superimposed strips being successively shorter circumferentially and transversely from the inner to the outer layer.

BENJAMIN J. LEVIN. 

